My dad put in an oil burning forced air unit from a trailer home. Built a wheel case for it, has a 30 gallon container for fuel oil and long flex ducting so he can direct the heat where he needs it.
it works really really knock the chill out and make it warm enough to work on the plane.
Well for Pittsbugh winters.
You can see my dad standing next to the contraption.
Hangar heat
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